Pile.



T; W. RIDLEY.

PILE.

APPLICATION FILED MAR 28. 1914.

1, 1 20,974, Patented Dec. 15, 1914.

2 SHEETS-SHEET L '1. W. RIDLEY.

FILE.

APYLIGATION FILED MAR} 28. 1914.

Patented'Dec. 15, 1914.

2 SHEETS-SHEET 2.

wuwwwo UNITED STATES PATENT OFFICE.

u-wmmm THOMAS WILLIAM BIDLEY, 0F MIDDLESTBBQUG-E, ENGLAND.

FILE.

Specification of Letters intent.

Patented Dec. 15, 1914.

Application fled larch 28, 1914. iertal Io. 827,895.

- brough, in the county of York. England,

have invented :1 new and useful Improvementin Piles, of which the following is a specification.

Two methods of introducing concrete piles into the ground are .now commonly employed. In one method the pile is formed'in a mold and allowed to set and the solid pile is then driven into the ground in a Sll'IlllHl manner to a wooden ile. In the other method a preparatory tubular pile is driven into the ground, is filled with concrete and is then withdrawn leaving the concrete in place. According to this invention these two methods are combined. A tubular preparatory pile is first driven into the ground and is partly'filled with liquid concrete. A solid concrete pile of 1cm diameter than the tube is then introduced into the preparatory pile and is forced by pressure into the liquid concrete and the preparatory pile is withdrawn or preferably the solid ile is forced downward simultaneously with the withdrawal of the preparatory pile. A solid pile of wood or other material may be substituted for the solid concrete pile but this is not usually desin able. The method for forcing down the solid pile and withdrawing the preparatory pile it is preferred to adopt is that described in an application filed on the 13th of J:1nu my 1914 Serial No. M1925.

l igure 1 is a vertical section showing a pile in the process of being driven and formed according to this invention. Fig. 2 is a horizontal section of the split nut and its box on a larger scale. Fig. 3 is u see tionnl elevation showing the can: grooves for operating the split nut. Fig. 4 is a vertical section, showing how the permanent or solid pile is driven, the preparatory pile withdrawn, and the concrete made to rise around the crmanent pile during the withdrawal of t e preparatory pile.

(I, is the tubular preparatory pile and o is its head.

a s compressible fibrous packing suclu; as Tucks packing and o is plastic packing such clay.

b is a solid concrete pile having a. iinnge 7, around it such flange being a loose lit in tube a.

b is concrete made of fine material and in a 'very plastic or semi-liquid condition.

The tube a with its head a is first driven into the ground in the ordinary way and hen it has reached the required depth the concrete 6 is poured into it. The solid pile b is then lowered into the tube a. In some cases the weight of the pile b is sufiicient to cause it to descend through the concrete b the latter being forced up into the annular space between the pile b and the tube a but usually it is necessary or desirable to apply force to cause the pile b to descend and the drawings show the means it is preferred to ado t namely those described in the pending app ication above referred to. e

c is a rammer resting on the top of the pile b. r

d is e split nut contained in a box a at the top of the rammer.

f is a screw working in the nut, and g is a worm wheel fixed to the top of the screw.

it is a worm gearing with the worm wheel and revolvin in hearings in a frame j fixed to the short link ki l is a chain wheel fixed to the worm and m is an endless chain by which it can be revolved.

The bottom of the link I: rests on the top of the screw f and takes its thrust while its upper end is pivoted to one end of the links n whose other ends are connected by the links 0 and p to the lifting chain 9 and to the preparatory pile a. When the chain g is hauled up to withdraw the preparator pile a then as described in the U. S. speci 1- cation No. 1,078,000 the link connections force the rammer a downward and this downward movement of the ra'mmer can be increased or diminished by turning the chain wheel Z.

The halves of the s lit nut d have fixed to them pins 1' whic engage with cam grooves .s in the ends of a strap t so that by giving the strap a quarter turn the halves of the nut are separated. As the pile b (16- scends and the tube a rises the concrete 6 surrounds the pile b and occupies the space before taken up by the thickness of the tube a. The flange '3' on the pile b after atime acts as a rammer on the to of the concrete fr and assists in consolidating it and forces it against the surrounding earth. Fig. 4 shows this operation and indicates how the concrete is disposed after the preparatory pile has been withdrawn.

5, pile with freely flowing plastic i (time, 1n

sorting in the tubular pile :1 iii pile Eulupper part of which is a diiimctcr Sllb stantially oquul to the interior of tho tubular pile and the lower part of which is of less diameter than the interior diameter of said tubular pile and then forcibly driving the solid pile downward and thus forcing the plastic concrete upward into the sp-Lice between the tubular pile and the solid one and confining it Within the Space below the larger part of the solid pile.

2. This mcllmd of placing piles in the ground, consisting in driving a tubular pile, partially filling said. tubular pile will; con-- crate, inserting in. the tubular pile a solid pile having a lower portion. of matoriiilly loss diametor than the tubular pile, forcing the solid pilc into the concrete to cause iii-2 latter to risc and fill he space between the solid pile and the tubular pile:- aiid then applying pressure to the top of the concrelio, preventing the latter from moving lllHHM'l'i and causing it to spread and llll the space iii the ground hetween the solid pile and the ground pre- Viously formed by he dvscont of the tubular pile and lfifl; vnciiiii by the witlidrmval of the tubular pile.

3. The method of placing concrete piles in the ground (f0lll-illillllf in (il'lYlI'lg a tubular prawn-:1 tor pile partially filling said tubu' iar pile wiili plusilic coiicicie. inacrzing in the. tubular pile a solid pile of loss diameter than the interior diameter of said tubular pile, forcibly driving: the solid pile down ward to thus force the plastic concrete upward in the space between the tubular pile and the solid one by means attached to the solid pile and then applying pressure on the concrete thug raised around the solid pile to cause the concrete in the lower portion of tho tubular pile to pass outward While the tubular pile is being withdraiin and. fill the annular space in the. ground between the solid pilv and the ground formed by the do scent of the tubular pile and left vacant by tho withdrawal of the milmlnr pile 'lHOMAS W'ILI AM RlDLEY.

Witnesses JOHN G. NIXUIQ, Jr., A. li lli'rcinivsom ill) 

